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OR Gate A circuit which performs an OR operation is shown in figure. It has n input (n >= 2) and one output . www.tutorialspoint.com Logic diagram www.tutorialspoint.com Truth Table www.tutorialspoint.com OR GATE IC As we seen above, lets do using IC ( 7432 ) components101.com Red wire is the  Vcc / Power / + wire Black wire is the  GND  / Ground / - wire Green wire is the Red LED power wire Yellow  wire is the input wire Orange  wire is the  Output wire 1) When the input both are 0 output will 0 2) When the   input  are 0 and 1   output  will   1 3) When the   input  are   1  and 0   output  will   1 4) When the   input both are 1   output  will   1 Other Gates AND GATE NOT GATE NOR GATE NAND GATE XOR GATE XNOR GATE